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Interfacial Microenvironment Modulation Boosting Electron Transfer between Metal Nanoparticles and MOFs for Enhanced Photocatalysis
Author(s) -
Xu Mingliang,
Li Dandan,
Sun Kang,
Jiao Long,
Xie Chenfan,
Ding Chunmei,
Jiang HaiLong
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202104219
Subject(s) - photocatalysis , polyvinylpyrrolidone , electron transfer , catalysis , chemical engineering , materials science , metal organic framework , nanoparticle , hydrogen production , photochemistry , photosensitizer , metal , nanotechnology , chemistry , organic chemistry , adsorption , polymer chemistry , engineering , metallurgy
Interfacial electron transfer between cocatalyst and photosensitizer is key in heterogeneous photocatalysis, yet the underlying mechanism remains subtle and unclear. Surfactant coated on the metal cocatalysts, greatly modulating the microenvironment of catalytic sites, is largely ignored. Herein, a series of Pt co‐catalysts with modulated microenvironments, including polyvinylpyrrolidone (PVP) capped Pt nanoparticles (denoted as Pt PVP ), Pt with partially removed PVP (Pt rPVP ), and clean Pt without PVP (Pt), were encapsulated into a metal–organic framework (MOF), UiO‐66‐NH 2 , to afford Pt PVP @UiO‐66‐NH 2 , Pt rPVP @UiO‐66‐NH 2 , and Pt@UiO‐66‐NH 2 , respectively, for photocatalytic hydrogen production. The PVP appears to have a negative influence on the interfacial electron transfer between Pt and the MOF. Compared with Pt PVP @UiO‐66‐NH 2 , the removal of interfacial PVP improves the sluggish kinetics of electron transfer, boosting photocatalytic hydrogen production.